Apex domains cannot have CNAME records.
Question and response
Question
dig absolight.net. NS
Answer
absolight.net. 5 NS ns4.absolight.net.
absolight.net. 5 NS ns3.absolight.net.
absolight.net. 5 NS ns1.absolight.net.
absolight.net. 5 NS ns2.absolight.net.
Authority
The response has no authority records.
Additional
ns1.absolight.net. 5 A 79.143.243.129
ns2.absolight.net. 5 A 178.20.71.2
ns3.absolight.net. 5 A 185.167.19.242
ns4.absolight.net. 5 A 80.67.160.62
ns1.absolight.net. 5 AAAA 2a01:678:2:100:0:0:0:53
ns3.absolight.net. 5 AAAA 2a0b:3200:20:ab50:0:0:0:53
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0